Machine for covering or insulating wire with yarn or its equivalent.



l D. N OBLE. MACHINE FOR COVERING 0R INSULATING WIRE WITH YARN OR ITS EQUIVALENT.

APPLICATION FILED AUG.3, 1911 1,32,8540 Patented July 16, 1912.

2 SHEETSSHBET 1.

WITNESSES:

4. I I I D. NOBLE. MACHINE FOR GOYERING 0R INSULATING WIRE WITH YARN OR ITS EQUIVALENT.

APPLIO'ATION FILED 11116.3, 1911. 1,032,854, Patented July 16, 1912.

2 SHEETS-SHEET 2 INVENTOR iUli l-llTELD PATENT @FFHJE.

DONALD NOBLE, OF BBIDGEPOR'IF. CONNECTICUT.

MACHINE FOR CUVERINCT OR INSULATING HIRE WITH YARN OR ITS EQUIVALENT.

loses-ii.

Specification of Letters Patent.

Patented July it c, 1912.

Application filed August}, 1.911. Serial No. 842,168.

To all whom ii may concern:

Be it known that l. DONALD Nontin a subject of King George V, King of. Great- Britain, residing in the city of Bridgeport, county of -Fairlield, State of (Jonnccticut .United States of America have invented certain new and useful improvements in lilachines for Covering or Insulating Wire with Yarn or Its Equivalent; and 1 do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the ar 1 to which it appertains to make and use the same.

My invention relates to machines for covering or insulating wire with yarn or its equivalent, and has for its objects to provide a tension device which shall be operative against the yarn cop at comparatively low speeds of the spinninghead but which shall be withdrawn entirely from said cop at comparatively high speeds of said head.

My present in'iprovcmcnt a iiplicable to the machine shown and described in Letters Patent of the United States, No. UOOJOQ, issued to me August 191i, and I have therefore illustrated and will briefly refer to herein certain parts of said machine that are covered by the claims of said applica tion, although I wish it to be understood that I limit my present claims to the particular tension devices which l have illustrated herein and will hereinafter describe.

ln my pending;- application aforesaid I illustrated and briefly described certain means for exerting an auton'iatically diminishing tension against the yarn cop, which means comprises a spring controlled tension finger carried by the spinning; head and constantly bearing against a bushing which carried the yarn cop, but I have ascertained that such a tension either against the cop itself or against'any element directly associated therewith was detrimental when the spinning head was revolving at a high rate of speed because the yarn as very apt to break. I have further ascertained that the normal. slipping frictional contact which ex ists between the spinning head and the yarn cop or any element which carries the latter, is not only sufficient when the yarn is withdrawn'from the cop at comparatively high speeds of the spinning head, but that such tension greatly militates in favor of uniform tension which the auxiliary rolls r erred to said application exert a ainst the latter delivered'to the covering de vices.

ll is the especial object of the present in venliou to provide a tension against the yarn 'cop o a n element carrying the same, by utilizing the principle of centrifugal force, which principle is predominantly present .in

a high specded machine like the one under consideration.

Referring to the accompanying drawing Figure l a longitudinal sectional elevation of a spinning head constructed in accordance with my present improvement. Fig. 2 a section at the line a, a, of Fig. 1. Fig. 3 a detail perspective view of the detachable head of the main shaft. Fig. 4 a (lctail perspcclive view of the tension sleeve. Fig. 5xa section at the line I), 3;. of .Fig. 1'. Fig. 6 a plan view of my improved. spinning head. and Fig. 7 a section at the line a, 0 of G.

Similar numerals of reference denote like parts, in the several. figures of the drawing.

1 is a hollow power shaft, and 2 is the spinning head which has an elongated internal hollow hub 3.

t is a detachable head which has a shank 5 that extends within the forward end of the shaft 1, and 6 is a set screw which is driven through the hub 3 and shaft 1 against the shank 5 whereby it will be readily understood that said shank, shaft and hub are rigidly secured together as to rotation. This shank 5 has an opening 7 extending therethrough and leading into the hollow shaft, and within this opening the spinning quill 8 is secured by means of set screw 9 driven through the head against said quill, the latter being provided throughoutits length with an open slot 10 which leads into the opening 7 and through which the wire 42 to he covered is led.

The head l is cut away to form small recesses 11. 12, which are in pairs that are disposed in planes at rightangles to each olher on opposite sides of the axial center of said head, for the purpose presently to be explained.

13 is a bushing which surrounds the hub 3 and is sutiiciently tight thereon so thatit may lie revolved independent of said huh but with a certain predetermined frictional contact therewith. The yarn cop it is carried by a. cop-tube 15 which latter is forced o'vcr the bushing 1.3 the ilatter being vided with ribs 16 so that the tube will fit over the bushing fairly tight. Therear extremity of the bushing 13 is preferably flanged as seen at 17 and this flanged portion bears against any suitable washer 18 contained within the head 2, but no portion of the cop or cop tube is in contact with the spinninghead as in the instance of my application above ,referred to.

In drawing the yarn from the cop, without any tension acting thereagainst except that provided by contact between the hub 3 and bushing 13, there is no likelihood of the yarn breaking when the spinning head is revolved at a comparatively high rate of speed, and such a tension is not only ample but exceedingly desirable in connection with the auxiliary tension rolls 19, described in my said application, around which the yarn is wound and from which said yarn is'de: livered directly to the covering devices.

A tension device which exertsaconstantly decreasing pressure against the cop as the latter decreases in size means a tension that is not uniform, and therefore when such a tension is employed the friction between the rolls 19 and the yarn cannot be uniform, and therefore the grip of the yarn on these rolls is at times too great and at times too little, the consequence being that the yarn will sometimes break while at other times the tension exerted by such rolls is useless. Before entering into any description of my improvements I will briefly refer to these;

rolls 19 and the parts that are associated therewith, although these elements have nothing to do with my' present invention,

. and I refer to them merely to give a clearer understanding of the operation of the machine as equipped with my improvements.

20 is the rim of the spinning head which incloses the cop and also extends rearward of the head and within said rim and secured to the rear of the head 2 is a casing 21 through which the shaft 1 freely extends.

'22 is a worm supported loosely by the shaft 1 and extending within the casing 21 and provided with a sleeve extension 23 which forms the journal bearing for the shaft and which is secured to the bed 24 of the machine by means of set screw 25, so that it 'will be clear that said worm is a' stationary element.

26 are spindles which are journaled within suitably disposed housings 27 in the cas ing 21, and 28 are worm wheels secured to the inner ends of these spindles and meshing with the worm 22, the 'yarn delivery rolls 19 being secured to the outer ends of these spindles and extending through the rim 20, all arranged and operating as set forth in my pending application above referred to.

The yarn 49 is led from the cop and con nected with the'rolls19 precisely in the manner described in my pending A application aforesaid, and all the conditions which characterize the mechanisms set forth in said application exist in the present construction with the exception of my improved ironer and polisher and tension devices hereinbefore mentioned, and therefore I will confine all further description to the mechanisms and devices that are immediately associated with my present invention.

30 is my improved tension sleeve which is assembled loosely around the hub 3 so as to have a free longitudinal movement, which sleeve is surrounded by a coil spring 31 that is confined between a flange 32 at the rear of the sleeve and a shoulder 33 of the head 4, the function of this spring being to normally drive the flange 32 against the outer edge of the bushing 13 so as to normally exert a considerable friction against said bushing to prevent the latter from readily I turning on the hub 3, thereby rendering it more diflicult to withdraw the yarn from the cop 14;. This sleeve is constructed in the manner particularly shown at Fig. et-

with narrow diametrically opposite finger extensions 34 which fit and extend within the recesses 11 in the head 4, said fingers extending beyond the main body of the head and being connected by means of a cross plate 35 which is perforated at 36 to admit the quill 8.

Immediately in the rear of the plate 35 between the latter and the body of the head is a space 37 and depending within this space and immediately in the rear of said plate are tails 38 which extend from dogs 39 that are pivoted near their rear ends within the recesses 12, and it will be readily understood that if the forward ends of these dogs-are spread, these tails will act against the plate 35 to withdraw the flange 32 from contact with the bushing 13. When the spinning head is revolved at a comparatively high rate of speed the centrifugal force will cause the outer ends of these dogs 39 to diverge, and will thereby relieve the cop from all tension save that which exists by frictional contact between the bushing and the hub 3, and when the speed of the head 2 slackens down to a predetermined rate, the spring 31 will force the flange 32 against the bushing 13 and thereby impose additional tension on the yarn copl The rate of speed of the spinninghead, necessary to cause the outer ends of the dogs 39 to diverge by centrifugal force, or to cause the spring 31 to maintain the additional tension against the yarn cop, can be readily determined, and may be varied according to the size of the wire or the strength of the covering yarn, and the spring 31 may be more or lesspowerful as the occasion may demand, these being matters of experiment merely and fully within the range of ordinary mechanical skill;

having its rear extension beyond the pivotal point heavier than the front extension forward of said point. The forward portion of the anvil and finger are adapted closely to each other so as to firmly embrace the covered wire as it passes between them from the quill, and when the spinning head is revolving at a comparatively high rate of speed the rear extension of the finger 4L1 will be thrown outwardly thereby causing the. forward part'of the finger to be depressed firmly against the covered' wire, whereby, anvil, said wire will be ironed and polished as fast as it is delivered from the quill. But this form of ironing and polishing device has of course nothingwhatever to do with the tension exerted against the co and I have merely illustrated and brie y described the same as exemplifying 'one form of such device which may be employed.

, Having thus described my invention what I claim as new and desire to secure'by Let:

' ters Patent is ing wirewith yarn or its equivalent, the

combination of the spinning'head which carries the yarn cop, with a tension device carriedby said head; a spring element for I against said cop,

in conjunction with the stationary causing said device to normally act against said cop, and centrifugally operated means for withdrawing said device from the cop.

- 3. In a machine for covering-or insulating wire with yarn or its equivalent, the

combination of the spinning head, the yarn cop carried by said head'with a fixed slipping frictional contact, a spring actuated tension device adapted to normally act and centrifugally operated means connected drawing the latter from said cop when'the spinning head is revolved beyond a prescribed rate of speed. Y

4. In a machine for covering or insulating. wire with yarn or its equivalenfi'the combination of the spinning head, the am with said device for withcop carried by said head with a uni orm slipping frictional contact therewith, a tension sleeve slidably carried by said head, a spring which normally forces said sleeve against the cop, head and connected with said sleeve and operated by centrifugal force for withdrawmg the sleeve from the cop'when the head is revolved beyond a prescg'ibed rate of speed.

5. In a machine ing combination of thecspinning head which carries the yarn cop, with a tension device, a spring for causing said device to act against the'cop when the head is revolving at comparatively low speeds and centrifugally op= erated means for causing said device to be withdrawn entirely from said cop when the head is revolving atcomparatively high speeds.

In testimony whereof I afiix my signature in presence of two witnesses.

- DONALD NOBLE.

Witnesses:

F. W. SMITH,JI., M. T. LONGDEN.

and means carried by said for covering or insulatwire with y'arnor its equivalent, the 

